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Separation of mixtures


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Separation of mixtures

  1. 1. Separation of Mixtures
  2. 2. Separation of Mixtures <ul><li>Identify the different ways of separating mixtures. </li></ul><ul><li>Determine how the different ways are used to separate mixtures. </li></ul><ul><li>Identify the ways in which magnetic attraction, filtration, evaporation, distillation and paper chromatography can be used in daily life. </li></ul>
  3. 3. Separation of Mixtures <ul><li>Mixtures are matter that are made up of two or more compounds and/or elements. </li></ul><ul><li>They can be easily separated. </li></ul><ul><li>Suspensions and solutions are mixtures. </li></ul>
  4. 4. Separation of Mixtures Techniques Magnetic Attraction Filtration Paper Chromatography Distillation Evaporation
  5. 5. Separation of Mixtures <ul><li>Magnetic Attraction </li></ul><ul><li>Separating mixtures containing magnetic material like iron, cobalt and nickel. </li></ul>
  6. 7. Separation of Mixtures <ul><li>Evaporation </li></ul><ul><li>Separating mixture of dissolved solids from a liquid . </li></ul><ul><li>Heat is applied to quicken evaporation but NOT to cause decomposition . </li></ul>
  7. 9. Separation of Mixtures <ul><li>Filtration </li></ul><ul><li>Separating mixture of un-dissolved solids from a liquid . </li></ul>
  8. 10. Some Filtration Systems
  9. 11. Separation of Mixtures <ul><li>Distillation </li></ul><ul><li>Separating liquid-liquid mixtures of different boiling points. </li></ul><ul><li>Temperature tells the type of vapour that is entering the condenser. </li></ul>
  10. 12. Laboratory Distillation Setup Stone chips are added into the liquid to allow even and uniform boiling Cold and hot water enters from the bottom and top of the condenser respectively. Water will gain heat as vapour condenses. Warmer water is less effective in condensing vapour Thermometer at the entrance of the condenser indicates the boiling point of the type of vapour entering it
  11. 13. Less Dense Component Denser Component
  12. 14. Separation of Mixtures <ul><li>Paper Chromatography </li></ul><ul><li>Identify the type of substances in a mixture. </li></ul><ul><li>Each substance have different solubility in a common solvent. </li></ul>
  13. 15. (1) Mixtures added at the base line (2) Paper dipped into solvent for mixtures (3) Component will run along paper as it dissolves in solvent Components of Essential Oils are separated
  14. 16. Separation of Mixtures <ul><li>What are the components in mixture X? </li></ul>X Contains Red and Yellow Components Red X Yellow Blue
  15. 17. Separation of Mixtures <ul><li>How do you separate a mixture of salt, sand and iron? </li></ul>Salt Salt Salt Iron Iron Iron Sand Sand Sand <ul><li>Magnetic attraction to get iron filings </li></ul><ul><li>Add water to dissolve salt </li></ul><ul><li>Filter to get sand residue </li></ul><ul><li>Evaporate filtrate to get salt </li></ul>N S
  16. 18. Separation of Mixtures <ul><li>Conclusion </li></ul><ul><li>5 simple methods of separating mixtures. </li></ul><ul><li>Different methods for components of mixtures with different properties. </li></ul><ul><li>Separating mixtures produces better understanding of mixture. </li></ul><ul><li>Man can produce useful mixtures/components from raw components/mixtures. </li></ul>